This article describes the principle of how to use this form generator. To generate a form, you need to pass a standard JSON Schema of data to formbox. There are a few additional helper fields that allow you to simplify data input into the form slightly, but overall it's a regular JSON Schema. (I'll try to update and supplement the article a bit soon) First and foremost, we implement the functionality used in flespi. Therefore, not all elements of JSON Schema are supported, but the basic functionality should work at 80-90%.
Formbox has a sandbox mode that allows you to try out some examples of forms and commands.
But you should understand that this is just a form generator that allows you to generate a form, fill it out, and return the data to the application that uses it. This form generator is not capable of performing any REST requests.